---
title: "Threshold Network Halts Optimistic Minting After Attack Attempt"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/287006630.md"
description: "Threshold Network has temporarily halted Optimistic Minting following an unsuccessful attack on May 18, 2026, where a malicious actor tried to mint tBTC without the required Bitcoin deposit. No invalid tBTC was issued, and user funds remain secure. Minting operations are now conducted via a liquidation mechanism, increasing the minting time from 1.5 hours to 6-7 hours."
datetime: "2026-05-20T04:47:19.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/287006630.md)
  - [en](https://longbridge.com/en/news/287006630.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/287006630.md)
---

# Threshold Network Halts Optimistic Minting After Attack Attempt

Threshold Network announced on the X platform that on May 18, 2026, a malicious actor attempted to mint tBTC without depositing the underlying Bitcoin. According to Odaily, the attempt was unsuccessful, no invalid tBTC was issued, and user funds were not at risk. As a precaution against frequent malicious activities in the broader crypto ecosystem, Optimistic Minting has been temporarily suspended. Currently, minting operations are conducted through a liquidation mechanism, extending the typical minting time from approximately 1.5 hours to about 6 to 7 hours.

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